Electrical Connections; Wiring Harness; 115 Volt Line Connections; Junction Box Relocation - Intertek MVM97 Series Installation Instructions Manual

E C
LECTRICAL ONNECTIONS
W H
IRING ARNESS
The wiring harness is an integral part of this furnace. Wires are
color coded for identification purposes. Refer to the wiring dia-
gram for wire routings. If any of the original wire as supplied with
the furnace must be replaced, it must be replaced with wiring ma-
terial having a temperature rating of at least 105° C. Any replace-
ment wiring must be a copper conductor.
115 V L C
OLT INE ONNECTIONS
Before proceeding with electrical connections, ensure that the sup-
ply voltage, frequency, and phase correspond to that specified on
the unit rating plate. Power supply to the furnace must be NEC
Class 1, and must comply with all applicable codes. The furnace
must be electrically grounded in accordance with local codes or, in
their absence, with the latest edition of The National Electric Code,
ANSI NFPA 70 and/or The Canadian Electric Code CSA C22.1.
Use a separate fused branch electrical circuit containing properly
sized wire, and fuse or circuit breaker. The fuse or circuit breaker must be sized in accordance with the maximum overcurrent
protection specified on the unit rating plate. An electrical disconnect must be provided at the furnace location.
Connect hot, neutral, and ground wires as shown in the wiring diagram located on the unit's blower door. For direct vent
applications, the cabinet opening to the junction box must be sealed air tight using either an UL approved bushing such as Heyco
Liquid Tight or by applying non-reactive UL approved sealant to bushing.
Line polarity must be observed when making field connections. Line voltage connections can be made through either the right or
left side panel. The furnace is shipped configured for a right side (left side for counterflows) electrical connection with the junction
box located inside the burner compartment. To make electrical connections through the opposite side of the furnace, the junction
box must be relocated to the other side of the burner compartment prior to making electrical connections. To relocate the junction
box, follow the steps shown below.
NOTE: Wire routing must not interfere with circulator blower operation, filter removal, or routine maintenance.
J B R
UNCTION OX ELOCATION
Line voltage connections can be made through either the right or
left side panel. The furnace is shipped configured for a right side
electrical connection. To make electrical connections through the
opposite side of the furnace, the junction box must be relocated
to the left side prior to making electrical connections. To relocate
the junction box, perform the following steps.
1. Remove the burner compartment door.
2. Remove and save the two screws securing the junction box to
the side panel.
3. Relocate junction box and associated plugs and grommets to
opposite side panel. Secure with screws removed in step 2.
T
O AVOID THE RISK OF INJURY
FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH
,
LOCAL CODES OR IN THEIR ABSENCE
E C .
NATIONAL LECTRICAL ODE
28
WARNING
, ,
ELECTRICAL SHOCK OR DEATH
,
WITH THE LATEST EDITION OF THE
HIGH VOLTAGE !
T
O AVOID THE RISK OF ELECTRICAL SHOCK
THE UNIT MUST BE POLARIZED AND GROUNDED
HIGH VOLTAGE !
T
O AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK
BEFORE SERVICING OR CHANGING ANY ELECTRICAL
.
WIRING
L
ABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
. W
CONTROLS
OPERATION
T
O PREVENT PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK
DISCONNECT ELECTRICAL POWER BEFORE INSTALLING OR SERVICING THIS
.
UNIT
E
DGES OF SHEET METAL HOLES MAY BE SHARP
PRECAUTION WHEN REMOVING HOLE PLUGS
HIGH VOLTAGE !
T
O AVOID THE RISK OF INJURY
,
DEATH THE FURNACE MUST BE ELECTRICALLY
THE
GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN
THEIR ABSENCE
N E
ATIONAL LECTRIC
Code (NEC) ANSI/NFPA 70-2011. In CANADA:
Canadian Electrical Code CSA C22.1.
WARNING
,
WIRING TO
WARNING
,
DISCONNECT ELECTRICAL POWER
CAUTION
IRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS
. V
ERIFY PROPER OPERATION AFTER SERVICING
WARNING
WARNING
.
WARNING
,
ELECTRICAL SHOCK OR
,
WITH THE LATEST EDITION OF THE
C . US: National Electrical
ODE
.
.
,
. U
SE GLOVES AS A